A Pelton wheel installation uses a water jet of 75mm diameter to drive a wheel with...
A Pelton wheel installation uses a water jet of 75mm diameter to drive a wheel with the buckets on a diameter of 0.9m. The deflection angle of the buckets is 160 o .The relative velocity of the water is reduced by 12% while moving across the buckets. The rotational 8 speed is 320rpm, the total pressure behind the nozzle is 0.7Mpa and the velocity coefficient of the nozzle is 0.98. Determine 5.1 the hydraulic power developed by the wheel, 5.2 the hydraulic efficiency of the wheel and 5.3 the overall efficiency of the turbine if the mechanical efficiency of the wheel is 96%.
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A Pelton wheel installation uses a water jet of 75mm diameter to
drive a wheel with...
Determine the efficiency of a water turbine The buckets of a Pelton wheel revolve on a...
Determine the efficiency of a water turbine The buckets of a Pelton wheel revolve on a mean diameter of 2.0 m at 1600 rev/min. The jet velocity is 1.5 times the bucket velocity. The water flow rate required to produce a power output of 2.5 MW is 120 kg/s. The blade friction coefficient is 0.97. The deflection angle is 165⁰ . Determine the efficiency of the water turbine.
In an impulse turbine of the Pelton type, the jet is turned by the bucket by...
In an impulse turbine of the Pelton type, the jet is turned by the bucket by 165°. The head available at the nozzle is 750 m and blade speed ratio is 0.46. Cv = 0.98. Relative velocity is reduced by 12% due to friction. Determine the hydraulic efficiency. If the flow available is 20 m3/s. What is the power potential. Assuming 5 units of equal power, determine the jet diameter and wheel diameter if d/D = 12.
Can you, after 10 hours from now, solve another question? Pu. 9. In Pelton wheel installation...
Can
you, after 10 hours from now, solve another question?
Pu. 9. In Pelton wheel installation a small auxiliary nozzle is often fitted, from which a jet of high pressure water can f the buckets, thus acting as a brake and bringing the wheel quickly to reset. Estimate the time required to stop the wheel by the brake nozzle under the following conditions: diameter of brake nozzle = 7 cm, head at the nozzle = 475 m, original velocity of...
A Pelton wheel with an efficiency of 85% is used to produce hydroelectric power from flow...
A Pelton wheel with an efficiency of 85% is used to produce hydroelectric power from flow of water behind a dam with an elevation head of 420 m. The average radius of the wheel and its angular velocity are 2.0 m and 220 rpm, respectively. This turbine works at its optimum rotation rate (which produces maximum power). The turning angle of the buckets is ? = 165° and nozzle diameter is given as 8.00 cm. a. Calculate volumetric flow rate...
Question 2 (5 points) A Pelton wheel has a head of 100 m and head lost...
Question 2 (5 points) A Pelton wheel has a head of 100 m and head lost due to friction in the penstock is 20 m. The main bucket speed is 15 m/s and the nozzle discharge is 1 ms. If the deflection angle is 160 and - 0.98, find the power of Pelton wheel and hydraulic efficiency
Mechanical lab please answer all steps 2. A Pelton wheel is used to produce hydroelectric power...
Mechanical lab please answer all steps
2. A Pelton wheel is used to produce hydroelectric power and the performance 62.4 lb/ft data are collected in the following table. Specific weight of water 1 hp 550 ftlb/s. Water supply line pressure Turbine speed Shaft torque (lbft) Flow rate (cfm) (psig 80 300 50 If water supply pipe diameter is 20 inches and turbine wheel radius is 20 inches, calculate the hydraulic head in ft, jet velocity, speed ratio, hydraulic horse power,...
A Pelton wheel turbine (at maximum efficiency) is designed for a water head H of 80...
A Pelton wheel turbine (at maximum efficiency) is designed for a water head H of 80 ft. The wheel having a diameter of 5 ft with a rotating speed of the wheel is 130 rpm. The nozzle efficiency is: Select one: a. 0.8 b. 0.9 C. 0.86 O d. 0.95
helppp Nozzle Problem 3) In a hydraulic Blade Front view turbine, water exits from a jet...
helppp
Nozzle Problem 3) In a hydraulic Blade Front view turbine, water exits from a jet of the blade and strikes the blades smoothly, as shown in the figure. Here, only two blades are shown. The angles of velocity vectors, before and after the blades, are shown. Determine (a) the force Wheel of blade exerted by the water on the blades (5 points), and (b) the power output of the turbine (1 point). Neglect friction on the blades. Assume V...
theavton the ump.if the absolute pressure of the liquid drops below the vapor pressure then cavitation will occur Answer B) False A) True A centrifugal pump delivers water against a net head of 20...
theavton the ump.if the absolute pressure of the liquid drops below the vapor pressure then cavitation will occur Answer B) False A) True A centrifugal pump delivers water against a net head of 20 meters and a design speed of 1100 rpm. is 10 m/s. he impeller diameter is 0.4 m. Determine manometric efficiency of the pump, if Co2 Intr E) 95% D) 92% A) 85% C) 90% B) 88% Answer In Calculate net head or effective head for Pelton...
Can
you, after 10 hours from now, solve another question?
Pu. 9. In Pelton wheel installation a small auxiliary nozzle is often fitted, from which a jet of high pressure water can f the buckets, thus acting as a brake and bringing the wheel quickly to reset. Estimate the time required to stop the wheel by the brake nozzle under the following conditions: diameter of brake nozzle = 7 cm, head at the nozzle = 475 m, original velocity of...
Question 2 (5 points) A Pelton wheel has a head of 100 m and head lost due to friction in the penstock is 20 m. The main bucket speed is 15 m/s and the nozzle discharge is 1 ms. If the deflection angle is 160 and - 0.98, find the power of Pelton wheel and hydraulic efficiency
Mechanical lab please answer all steps
2. A Pelton wheel is used to produce hydroelectric power and the performance 62.4 lb/ft data are collected in the following table. Specific weight of water 1 hp 550 ftlb/s. Water supply line pressure Turbine speed Shaft torque (lbft) Flow rate (cfm) (psig 80 300 50 If water supply pipe diameter is 20 inches and turbine wheel radius is 20 inches, calculate the hydraulic head in ft, jet velocity, speed ratio, hydraulic horse power,...
A Pelton wheel turbine (at maximum efficiency) is designed for a water head H of 80 ft. The wheel having a diameter of 5 ft with a rotating speed of the wheel is 130 rpm. The nozzle efficiency is: Select one: a. 0.8 b. 0.9 C. 0.86 O d. 0.95
helppp
Nozzle Problem 3) In a hydraulic Blade Front view turbine, water exits from a jet of the blade and strikes the blades smoothly, as shown in the figure. Here, only two blades are shown. The angles of velocity vectors, before and after the blades, are shown. Determine (a) the force Wheel of blade exerted by the water on the blades (5 points), and (b) the power output of the turbine (1 point). Neglect friction on the blades. Assume V...
theavton the ump.if the absolute pressure of the liquid drops below the vapor pressure then cavitation will occur Answer B) False A) True A centrifugal pump delivers water against a net head of 20 meters and a design speed of 1100 rpm. is 10 m/s. he impeller diameter is 0.4 m. Determine manometric efficiency of the pump, if Co2 Intr E) 95% D) 92% A) 85% C) 90% B) 88% Answer In Calculate net head or effective head for Pelton...
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